[PATCH] D147243: [X86] MatchVectorAllZeroTest - add support for icmp(bitcast(icmp_ne(X,Y)),0) vector reduction patterns

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 509949.
RKSimon added a comment.

Use peekThroughBitcasts and add assert to make it clear we're matching a reduction by bitcasting a vector comparison result to a scalar value for comparison with zero


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D147243/new/

https://reviews.llvm.org/D147243

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/memcmp-more-load-pairs.ll
  llvm/test/CodeGen/X86/memcmp.ll
  llvm/test/CodeGen/X86/movmsk-cmp.ll
  llvm/test/CodeGen/X86/pr53419.ll
  llvm/test/CodeGen/X86/setcc-wide-types.ll
  llvm/test/CodeGen/X86/vector-reduce-or-bool.ll
  llvm/test/CodeGen/X86/vector-reduce-or-cmp.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D147243.509949.patch
Type: text/x-patch
Size: 91911 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20230331/ca1f8b7f/attachment-0001.bin>